<div dir="ltr"><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px;background-color:rgba(248,248,248,0.6)">
I'm using OpenLayers 2 with Proj4JS 1.10. When trying to change the map's projection using</p><pre style="white-space:pre-wrap;margin-top:0px;margin-bottom:10px;padding:5px;border:0px;font-size:12px;vertical-align:baseline;overflow:auto;width:auto;max-height:600px;font-family:Consolas,Menlo,Monaco,'Lucida Console','Liberation Mono','DejaVu Sans Mono','Bitstream Vera Sans Mono','Courier New',monospace,serif;background-color:rgb(238,238,238);word-wrap:normal;color:rgb(51,51,51);line-height:18px">
<code style="margin:0px;padding:0px;border:0px;vertical-align:baseline;font-family:Consolas,Menlo,Monaco,'Lucida Console','Liberation Mono','DejaVu Sans Mono','Bitstream Vera Sans Mono','Courier New',monospace,serif;color:rgb(34,34,34);white-space:inherit">Proj4js.defs['STEREOGRAPHIC:180,90'] = "+proj=stere +lat_0=90 +lon_0=180 +a=3396190.0 +b=3396190.0 +over=F +geoc=T";
map.baseLayer.projection.proj = new Proj4js.Proj('STEREOGRAPHIC:180,90');
</code></pre><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px;background-color:rgba(248,248,248,0.6)">
and then zooming in to refresh the map, I get a JavaScript error tracing back to the Graticule control: <code style="margin:0px;padding:1px 5px;border:0px;vertical-align:baseline;font-family:Consolas,Menlo,Monaco,'Lucida Console','Liberation Mono','DejaVu Sans Mono','Bitstream Vera Sans Mono','Courier New',monospace,serif;color:rgb(34,34,34);background-color:rgb(238,238,238);white-space:pre-wrap">Uncaught TypeError: Cannot read property 'x' of null</code>.</p>
<p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px;background-color:rgba(248,248,248,0.6)">
Is there an issue with my proj4 string or could this be a bug with OpenLayers or Proj4JS?</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px;background-color:rgba(248,248,248,0.6)">
Thanks,</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px;background-color:rgba(248,248,248,0.6)">
Scott Odle</p></div>